Dear kaylee, Ductal Carcinoma In Situ (DCIS) can be described as a pre-cancer. The abnormal cells are confined within the duct of the breast and have not “invaded” outside of the duct. We really don’t know how long it takes for DCIS to get to the size it is. Classification systems have been developed to give an idea about the likelihood of DCIS recurring. The Van Nuys Prognostic Index is the system used currently but is not foolproof. The score will be a number between 3 and 9, with 9 as the worst (worst meaning likelihood of recurrence). This Index looks at tumor size, margin width as well as pathological classification. Based on the information above your score would total 8. What this score/information helps is for decision regarding further treatment from biopsy, you have had the bilateral mastectomy which most of the time will be more than adequate.
Since DCIS is not capable of spreading there is no reason to use chemotherapy. DCIS doubles your risk of getting cancer in the other breast, but since you have had the other breast removed use of adjuvant hormone therapy (tamoxifen) doesn't make sense because the use of that is also in terms of preventing recurrence in the opposite breast.
For larger tumors (greater than 5 centimeters) some experts think removing lymph nodes to check for possible disease spread. But in small areas of DCIS (such as yours 1.6cm) it is not necessary because precancer doesn't spread at this stage.
In her book, “Dr. Susan Love’s Breast Book”, she gives a good explanation of DCIS. She does this in language for the lay person. This might be a good source for further reading on the topic, for background, and for having discussions with your doctor.
I hope this information can give you some peace of mind.
Happy Holidays to you and your family.
This site can help you understand every question you have and the ladies are so wonderful and very supportive.
PS. Went to the gym today to work out. Gained 20 pounds since I got diagnosed and quit smoking.
You might try it though, it helped me.
Gina